Fatal error: Uncaught Error: Class 'PharIo\Manifest\ManifestElement' not found in C:\xampp\htdocs\admin\vendor\phar-io\manifest\src\xml\ExtensionElement.php:12 Stack trace: #0 {main} thrown in C:\xampp\htdocs\admin\vendor\phar-io\manifest\src\xml\ExtensionElement.php on line 12